A substance on the surface of cells, particularly cancerous cells, that is shed into the bloodstream; higher-than-normal amounts of CA 19-9 in the blood can sometimes be a sign of colorectal or pancreatic cancer.
A substance on the surface of cells, particularly cancerous cells, that is shed into the bloodstream; higher-than-normal amounts of CA 19-9 in the blood can sometimes be a sign of colorectal or pancreatic cancer.
